J&D Brothers, also marketed as Jack & Danny and later rebranded as J&D Luthiers, is a budget-oriented stringed instrument brand distributed primarily by Music Store professional, the large Cologne-based German retailer. The instruments are produced in the Far East — historically by the Taiwanese manufacturer Yeou Chern Enterprises, which has a long OEM track record building for larger guitar companies including Epiphone and Ibanez.

The catalog spans electric guitars in ST, T, singlecut and semi-hollow configurations, along with acoustic, classical and bass guitars, ukuleles and banjos. The brand positions itself at the entry and intermediate price tiers, offering familiar body shapes and conventional hardware aimed at beginners, students and players looking for an inexpensive second instrument for practice or rehearsal. Left-handed variants are available across several of the core models.

The line is generally sold through Music Store's retail and online channels as well as the secondary market, rather than through a dedicated consumer-facing brand website, and discussion of J&D instruments is concentrated on community forums such as TalkBass, Ultimate Guitar and My Les Paul Forum.

J&D Brothers has 11 products cataloged on Equipboard, including Solid Body Electric Guitars and Electric Basses. Their gear is featured by 1 artist, with the strongest followings in Rock. Notable users include Maestro Ghedi.